I hit a full sized Ibis or a Crane smack in the middle of the torso at 140 knots, 3,500 ft in the middle of nowhere and to be honest, it damaged the leading edge of the wing (Cirrus) but I really doubt it would take off a wing... it would certainly dint it though! To take off the wing it would have to hit the strut in a very specific way to achieve that. Not impossible I guess, but improbable. There's about an 8 inch crack in the front of this wing pictured along the leading edge horizontal (where you would join a top to a bottom half for example) The red marks are the birdy-blood.
